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參數資料
| 型號： | VF640S-1-2.0MHZ |
| 廠商： | VALPEY FISHER CORP |
| 元件分類： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 2 MHz, CMOS/TTL OUTPUT |
| 封裝： | CERAMIC, MINIATURE, 6 PIN |
| 文件頁數： | 1/1頁 |
| 文件大小： | 0K |
| 代理商： | VF640S-1-2.0MHZ |
OBSOLETE
75 South Street, Hopkinton, MA 01748
800-982-5737
508-435-6831
Fax: 508-435-5289 www.valpeyfisher.com
65
XO
VF640
Creating a Part Number
VF640
FREQUENCY STABILITY
Code
Specification
S
±20
ppm
A
±25
ppm
B
±50
ppm
±100 ppm (std.)
C
±500 ppm
DUTY CYCLE
Code
Specification
H
±5%
±10% (std.)
INPUT VOLTAGE
Code
Specification
L
3.3 Volt
5.0 Volt (std.)
OPERATIONAL TEMP. RANGE
Code
Specification
0
°C to +70°C (std.)
1
-40
°C to +85°C
FREQ.
Example: VF640BHL-1-19.44MHz: Frequency Stability
±25ppm,
Duty Cycle
±1.5%, Input Voltage 3.3 Volt ±5%, Operating
Temperature -40
°C to +85°C, Frequency 19.44MHz.
0.310"
(7,87mm)
0.335"
(8,51)
0.300"
(7,62mm)
0.010"
± 0.002"
(0,254mm
± 0,05mm)
0.250" REF
(6,35mm)
0.132"
± 0.010"
(3,35mm
± 0,254mm)
0.200"
(5,08mm)
0.100"
(2,54mm)
0.018"
± 0.002"
(0,457mm
± 0,05mm)
#6
#5
#4
#1
#2
#3
VF640
19.44MHZ
BO1H
#1
#2
#3
#6
#5
#4
VF640
CMOS/TTL Compatible Clock Oscillator
Miniature 6 Pin Ceramic Package
FEATURES
Very Low Phase Jitter
Tristate Output Control
Tight Duty Cycle Available
Parameter
Symb
Condition
Min
Typ
Max
Unit
Note
Input Break
Vcc
–0.5
7.0
V
Down Voltage
Storage Temp.
Ts
–55
+125
°C
Frequency
F
2.0
130
MHz
Range
Frequency
F/F
Overall conditions
±100
ppm
1
Stability
including:
calibration, temp.,
aging 10 yrs,
shock, vibration
Input Voltage
Vcc
4.75
5.00
5.25
V
Std.
3.15
3.30
3.45
LV Opt.
Input Current
Icc
15pF load, 50MHz
40
mA
2
Load
Duty Cycle
@1.4V
40
50
60
%
3
Rise/Fall Time
Tr/Tf
20% to 80%
4.0
ns
0.4V to 2.4V
1.5
Logic “1” Level
Voh
Max Load
0.9Vcc
V
Logic “0” Level
Vol
Max Load
0.1Vcc
V
Start–up Time
Ts
2
10
ms
Phase Jitter
1
σ
1
ps
fj>1KHz
Tristate
Function
Enable/
Te/Td
100
ns
Disable Time
Operating
Temperature Range
0°C to +70°C (–40°C to +85°C available)
Mechanical Shock
Per MIL–STD–202, Method 213, Cond. E
Thermal Shock
Per MIL–STD–883, Method 1011, Cond. A
Vibration
Per MIL–STD–883, Method 2007, Cond. A
Soldering Conditions
260°C, for 10s, Max. or 230°C for 90s, Max
Hermetic Seal
Leak rate less than 5 x 10–8 atm.cc/s of helium
Pin Out
Pin #1–N/C
Pin #2–Tristate Control
Pin #3–Ground, Case
Pin #4–Output
Pin #5–N/C
Pin #6–Vcc
10 TTL gates or 50pF Max
Absolute
Max.
Ratings
Electrical
Environmental and
Mechanical
Electrical
Connections
Notes:
1. Standard frequency stability, others available.
2. Current is load and frequency dependent.
3. Standard symmetry, tighter available.
4. Surface mount available, see VF640–G, VF640–L.
All specifications are subject to change without notice.
Input HIGH (>2.5V) or floating:
ACTIVE
Input LOW (<0.5V):
INFINITE IMPEDANCE
All dimensions are typical unless otherwise specified.
*Not recommended for new designs
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